Operation & Software Manual
120
Direct Drives & Systems
Chapter C: System functions ETEL Doc. - Operation & Software Manual # DSC2P 903 / Ver. F / 3/6/05
Remark: In the following examples, the reading head is positioned in the middle of the motor and the limit
switch covers the distance between the middle of the limit switch and the mechanical end stop.
K40 = 0:
Homing against a mechanical end stop with a positive movement. After having found the mechanical end stop,
the motor moves back the distance given by parameter K47.
K40 = 1:
Homing against a mechanical end stop with a negative movement. After having found the mechanical end stop,
the motor moves back the distance given by parameter K47.
K40 = 2:
Homing on a home switch with a positive movement. To have the home switch always in the same position the
motor must find it when moving in the determined direction. There are three possibilities:
1. The motor is on the left of the home switch at the beginning of the homing. It moves and directly
meets the home switch.
2. The motor is on the home switch at the beginning of the homing. It moves the distance given
by parameter K48 in the opposed direction of the homing, to leave the home switch. Then it
moves back towards the home switch in the right direction. Parameter K48 must be bigger than
the home switch length.
MOTOR
I
K47
MOTOR
I
K47
MOTOR
Motor braking distance (variable)
Home switch status
I
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